Heroine Overview

Snap out of it, Lelouch! You're Zero now! You have an obligation! You have to live up to the dreams you once gave us all! So please, keep fooling us until you no longer can! We need you to be Zero this time with all your heart. Play your role like you mean it!
~ Kallen Kōzuki.

Kallen Kōzuki is a main character of the anime series Code Geass: Lelouch of the Rebellion. She is a student at Ashford Academy and a member of the Japanese resistance group, and later the Black Knights, a group led by Zero. She is officially known as Kallen Stadtfeld, and goes by this name at school, but prefers her mother's maiden surname during her revolutionary activities.

She is voiced by Ami Koshimizu, who also voiced Mai Shiranui, in the Japanese version of the anime, and by Karen Strassman in the English version of the anime.


Kallen is a tall girl with short, reddish hair and blue eyes.


Kallen is a clumsy and strong-willed young woman, and a loyal member of the Black Knights. She is determined to fight for the Japanese people and help the leader of the knights, Zero, to accomplish his goals. However, because she admires Zero, she becomes shocked upon discovering that his true identity is of her classmate Lelouch, whom she initially dislikes.


She is endowed with strength, agility, and surprising accuracy, like when she struck a flying bee. However, her agility is not to be ruled out: she once blew her helpless Eleven bunny cover and defeated a member of the mafia who was taking her away.


  • Ami Koshimizu won "Best Actress in supporting role" for her role as Kallen at the first Seiyu Awards in 2007.
  • Kallen was awarded 8th place in the 29th Anime Grand Prix, then 17th and 16th, respectively, in the following two.
  • Kallen shares her name with Kallen Kaslana from the videogame Honkai Impact 3rd.


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